Appointed Mintmaster for Cologne (City), Germany, on 17 February 1723, but resigned before 22 June in that year. There is
a bowl made by Rütgers in the possession of the Evangelischen Gemeinde in Düren, dated 1733. Lit.: Alfred Noss, Die Münzen
der Städte Köln und Neuss: 1474-1794 (1926) pp. 47-49, 296-297.